Common amongst those of Italian/Latino/Pacific Islander other olive complections, whom are chronic tanners and/or surfers.
Doesn't show the red of a normal burn because the person is too tan already. Once they have reached their deepest tan, it's the condition just slightly beyond this.
Symptoms; extreme dark tan, slightly crispy texture, with a little extra heat; see "afterburn" but never appearing as a haole red burn; see "lobster face"
Commonly occurs after long surfing sessions in the tropics. Or overtanning by Guidos.